Laboratory　work　is　your　chance　to　learn　science　firsthand.　It　can　be　fun　but　you　must　be　careful　to　prevent　injury.　Listen　closely　when　your　teacher　reads　and　explains　the　rules　before　your　first　lab　lesson.
LABORATORYRULES
Throughout　the　lesson
·Do　not　enter　the　science　lab　without　the　teacher’s　permission.·No　food　or　drinks　are　to　be　alowed　in　the　science　lab.
Before　the　Experiment
·Read　al　instructions　carefuly　before　every　experiment.
·Prepare　al　apparatus（仪器）and　arrange　them　so　that　you　wil　not　knock　them　over　while　doing　the　experiment.
During　the　Experiment
·If　you　are　unsure　of　how　to　use　any　apparatus　or　how　to　operate,　ask　your　teacher　for　help.·Never　smel　or　taste　chemicals　unless　your　teacher　gives　permission.
After　the　Experiment
·Wash　al　apparatus　after　use　and　return　them　to　the　places　where　they　were.
·Throw　waste　materials　in　proper　waste　baskets.　　　　First　Aid　　　　
·Report　al　accidents　to　your　teacher　immediately.
·If　you　spil（ 溅 出 ）any　chemicals　onto　your　body　or　clothing,　wash　with　plenty　of　water　and　report　to　your　teacher.
【小题1】　Your　teacher　wil　probably　tel　you　the　rules　above　_____　the　first　lab　lesson.

A．taste　the　chemicals　first

B．clean　al　the　apparatus

C．read　al　instructions　carefuly

D．report　al　the　accidents　to　the　teacher

A．bring　food　into　the　lab
B．enter　the　lab　anytime
C．smel　chemicals　as　you　like	D．learn　science　directly　in　the　lab

A．Before　the　Experiment

B．First　Aid

C．During　the　Experiment

D．After　the　Experiment

根据短文内容，用方框中所给单词的适当形式填空，每词限用一次。

Some colors make us feel calm and peaceful. Blue is one of these colors. Wearing blue clothes or sleeping in a blue 　【小题1】　 is good for the mind and body. Blue can 　【小题2】　 mean sadness. Someone who is feeling sad may say “I’m feeling blue.” Some colors make us feel happy. Orange is such a happy color. It can bring you happiness and cheer you up when you are sad. If you feel 　【小题3】　 or weak, please wear colors that make you feel energetic. Green can give you energy, because it 　【小题4】　 new life. And you can also wear red. That makes it easier 　【小题5】　 you to take action.

补全短文。（共10小题；每小题1分，计10分）

用方框内所给单词的适当形式填空，使短文完整、通顺。

Saving electricity and water is important in our life. There are 1.　　　　 little things for us to do at home to help save the Earth. They’re small, but  2.　　　　 of people do the same thing and  3.　　　　 a great difference. By making some small 4.　 　 to the way you do things at home, you are helping our planet day by day.

You can spend 5.　　　　 and improve your health better at the same time, so

6.　　　　 to save the environment is a good exercise!

You can use windows to make the house good to live in. You can keep windows and doors 7.　　　　 to keep the house warm in winter and open in summer. The wind will often keep you as cool as 8.　　　　 the open air.

And you must do something to save water. The water that you use in the kitchen can

9.　　　　 be used to wash the rice or water the flowers, and it’s very good for 10.　　　　. Please always remember to turn off the lights when you leave.